:root {
  --color-bg: #fbf7f7;
  --color-surface: #ffffff;
  --color-border: #ead9d9;
  --color-text: #1d2433;
  --color-muted: #6b7280;
  --color-primary: #d32f2f;
  --color-primary-hover: #b71c1c;
  --color-primary-soft: #fdecec;
  --color-error-bg: #fdecec;
  --color-error-text: #b71c1c;
  --color-info-bg: #fff4e5;
  --color-info-text: #8a4b00;
  --color-success-bg: #e8f5e9;
  --color-success-text: #1b5e20;
  --radius: 12px;
  --shadow: 0 4px 16px rgba(60, 20, 20, 0.06);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN",
               "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.page-center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

.container {
  max-width: 720px;
  margin: 24px auto;
  padding: 0 16px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  width: 100%;
  max-width: 420px;
}

.container .card {
  max-width: none;
}

.brand {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.company {
  margin: 0 0 16px;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.muted {
  color: var(--color-muted);
}

.center {
  text-align: center;
}

form label {
  display: block;
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--color-muted);
}
form label span {
  display: block;
  margin-bottom: 6px;
}

input[type="email"],
input[type="password"],
input[type="text"] {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 1rem;
  background: #fff;
  color: var(--color-text);
  transition: border-color .15s, box-shadow .15s;
}
input[type="email"]:focus,
input[type="password"]:focus,
input[type="text"]:focus,
input[type="tel"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.18);
}

input[type="tel"] {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 1rem;
  background: #fff;
  color: var(--color-text);
  transition: border-color .15s, box-shadow .15s;
}

.btn {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: background-color .15s, border-color .15s;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  width: 100%;
  margin-top: 20px;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  text-decoration: none;
}
.btn-secondary {
  background: #fff;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary-soft);
  text-decoration: none;
}
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  padding: 8px 12px;
}
.btn-ghost:hover {
  background: rgba(0,0,0,0.04);
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

.alert {
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 12px;
  font-size: 0.95rem;
}
.alert ul {
  margin: 0;
  padding-left: 18px;
}
.alert-error {
  background: var(--color-error-bg);
  color: var(--color-error-text);
}
.alert-info {
  background: var(--color-info-bg);
  color: var(--color-info-text);
}
.alert-success {
  background: var(--color-success-bg);
  color: var(--color-success-text);
}

.appbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.appbar-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logout-form {
  margin: 0;
}

.info-list {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 8px 16px;
  margin: 20px 0;
}
.info-list dt {
  color: var(--color-muted);
  font-size: 0.9rem;
}
.info-list dd {
  margin: 0;
}

@media (max-width: 480px) {
  .card { padding: 24px 20px; }
  .info-list { grid-template-columns: 1fr; gap: 0 0; }
  .info-list dt { margin-top: 12px; }
}